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柱花草在广东春播为常规,但由于苗期生长缓慢,不利于与杂草竞争,早收和高产优质;而柱花草在气温20℃左右以生根为主,地上地下生长均衡,有利于小虎冬,翌年早生快发,从而也利于与杂草竞争和高产优质,在我省南亚热带地区可以利用“十月小阳春”的降水过程,实施秋播。本试验结果表明秋播技术值得示范推广。 相似文献
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G. Tarawali V. M. Manyong R. J. Carsky P. V. Vissoh P. Osei-Bonsu M. Galiba 《Agroforestry Systems》1999,47(1-3):93-122
Traditional shifting cultivation systems can no longer be sustained in West Africa because of rapid increases in human and livestock populations. Short-duration, improved fallows are among the alternative land-management strategies that have evolved. This paper reviews how velvetbean or mucuna (Mucuna pruriens) and stylo (Stylosanthes hamata and Stylosanthes guianensis) management systems were developed and disseminated in West Africa. Mucuna was first adopted by farmers in southwestern Benin between 1988 and 1992, and the number of testers of the innovation rose to 10,000 farmers throughout Benin by 1996. Suppression of spear grass (Imperata cylindrica) was perceived as the main benefit of mucuna fallows. The stylo technology was introduced in the late 1970s, and it was primarily targeted to livestock production in the subhumid monomodal rainfall zone. The uptake of stylo has been relatively slow and modest in West Africa in contrast to the faster rate of adoption of mucuna in southwestern Benin. Some of the contributory factors to the slower adoption of stylo than mucuna include rainfall regime, lack of motivation of livestock keepers, insecure land tenure, limited capability and facilities of extension staff, poor communication among scientists, and unsatisfactory establishment of the crop. Recommendations to increase the adoption of improved fallows include the use of a participatory approach in problem identification, expansion of the genetic base of cover crops for use in fallows, optimization of the multiple benefits of cover crops, management of the improved system, promotional strategies, and appropriate policies.This revised version was published online in November 2005 with corrections to the Cover Date. 相似文献
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为了探索不同磷肥施用量对柱花草侧芽发生的影响,以热研2号、有钩柱花草和电白柱花草为材料,设置了3个磷肥(P2O5)水平,分别为每千克土施入磷肥0.2,0.8,1.6g,并以不施磷肥为对照,在温室条件下进行盆栽试验。以累计主茎和侧枝的侧芽数量为指标进行了连续观测和分析。结果表明, 供试柱花草材料的主茎和侧枝的侧芽数是其遗传特性和栽培条件共同作用的结果。不同供试柱花草有利于其侧芽发生的最佳施磷量不同,热研2号柱花草最佳磷肥施用量为每千克土施入磷肥0.2g,其他2个供试柱花草的最佳磷肥施用量为每千克土施入磷肥0.8g。施用磷肥可以促进柱花草主茎侧芽和侧枝侧芽的发生,但对侧枝侧芽发生的影响更大,促进侧枝侧芽的发生可能是磷肥提高柱花草产量的重要途径。 相似文献
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温度胁迫对苜蓿和柱花草光合作用及N还原的影响 总被引:3,自引:0,他引:3
苜蓿(Medicago sativa L.)和柱花草(Stylosant hesgui anensis(Aubl.)Sw.)均为优质豆科牧草,前者耐寒但不耐热,主要种植在北方地区,而后者耐热不耐寒,主要种植在热带亚热带地区。为探讨这两种牧草对温度胁迫的适应机制,本文从温度胁迫对其伤害、渗透调节物质含量的变化光合作用、N还原等方面开展了研究。 相似文献
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以圭亚那、西卡、有钩柱花草为试验材料,采用室温硅胶干燥法,获得不同含水量的柱花草种子,经过人工老化和室内回湿,测定其发芽率、电导率、丙二醛等指标。结果表明:圭亚那柱花草种子超干处理到含水量为3.3%、西卡柱花草种子超干处理到含水量为2.7%、有钩柱花草种子超干处理到含水量为3.7%,经室内回湿处理,超干种子细胞膜系统的完整性良好。因此,利用超干技术贮存柱花草种子是可行的。 相似文献
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笔花豆种子生产技术措施 总被引:1,自引:1,他引:0
本文提出笔花豆在种子生产中育苗移栽的必要性。从育苗、移栽、病虫害防治以及收种等方面,叙述了笔花豆种子生产技术措施。 相似文献
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